OMTech Solis Duo vs xTool F2 Ultra: Dual-Laser Engraver Showdown

Quick answer: If color engraving on metal is the job, the xTool F2 Ultra wins outright — its 60W MOPA fiber source can vary frequency to achieve color and grip on metal that the Solis Duo's regular (non-MOPA) fiber source simply can't produce, regardless of which Solis Duo configuration you buy. If color-on-metal isn't the priority, the Solis Duo actually has the larger native work area and a lower entry price, so the F2 Ultra's premium is only worth paying for the capability it's actually built for.

Table of Contents

• The One Capability That Decides This Comparison
• Spec-by-Spec Comparison
• Work Area: Correcting a Common Assumption
• When the Solis Duo Is the Better Choice
• Choose the F2 Ultra If / Choose the Solis Duo If
• Frequently Asked Questions

The One Capability That Decides This Comparison

"I'd steer customers towards the F2 Ultra specifically if they want to do color engraving on metals," says Shishir Nigam, Founder of The Maker's Chest. "The F2 Ultra comes with a 60W MOPA fiber source, whereas the Solis Duo maxes out at a 50W regular fiber source. A regular fiber source typically isn't capable of varying frequency the way a MOPA source can, so it can't achieve the degree of color and grip on metal that a MOPA source is built for."

This is the single most important technical distinction in the whole comparison, and it's not just a wattage gap — MOPA (Master Oscillator Power Amplifier) technology lets the laser vary its pulse frequency and duration independently, which is specifically what produces controlled color effects on stainless steel and titanium. A higher-wattage non-MOPA source doesn't close that gap; it's a different mechanism entirely. For the full breakdown of Galvo vs. MOPA fiber technology on OMTech's own lineup, see our Galvo vs. MOPA guide.

Spec-by-Spec Comparison

Work Area: Correcting a Common Assumption

It's easy to assume the more expensive, higher-spec F2 Ultra also has the bigger work area — but it doesn't. The Solis Duo actually has the larger native bed: 250mm × 250mm versus the F2 Ultra's 220mm × 220mm. With their respective optional conveyors attached, the Solis Duo's expanded length (900mm) is also considerably longer than the F2 Ultra's (500mm).

The F2 Ultra's real advantages are elsewhere: the 60W MOPA source for color engraving, dual 48MP AI cameras for placement accuracy, and a materially faster top speed (15,000mm/s vs. 10,000mm/s). Work area isn't one of them — don't let the higher price tag create an assumption about bed size that the spec sheet doesn't support.

When the Solis Duo Is the Better Choice

If color engraving on metal isn't part of your workflow, the calculus flips in the Solis Duo's favor. It has a larger native and expanded work area, LightBurn compatibility for shops already standardized on that software, and a starting price below the F2 Ultra even at its top 50W/40W configuration — with lower-tier Solis Duo configs available at meaningfully lower prices for buyers who don't need that top power level at all. See our full Solis Duo review for the standalone machine, or our Solis Duo vs. F1 Ultra comparison at the entry tier.

The 50W/40W Solis Duo also ships with two field lenses included, not one — a 9.8" × 9.8" production lens for batch layouts and a 5.9" × 5.9" precision lens that concentrates the beam into a smaller, higher-energy-density spot. That second lens is specifically built for fine jewelry text, small hallmarks, and dense QR codes at small sizes, where the larger lens's spot size would soften edge definition. If your work regularly swings between batch production and fine detail work, that included second lens is a real practical advantage the spec-sheet wattage comparison doesn't capture.

Choose the F2 Ultra If / Choose the Solis Duo If

Choose the xTool F2 Ultra if:

• Color engraving on stainless steel or titanium is a real part of your product line
• You want the fastest available speed and the most advanced camera-guided placement in this category
• You're comfortable working within a smaller native work area for that added capability

Choose the OMTech Solis Duo if:

• Color-on-metal isn't a requirement — your metal work is standard marking/engraving, not color effects
• You want the larger native and expanded work area
• You want LightBurn compatibility or a lower entry price via one of the smaller Solis Duo configurations

Frequently Asked Questions

Can the OMTech Solis Duo do color engraving on metal?

Not at the same level as the F2 Ultra. The Solis Duo's fiber source is a regular (non-MOPA) fiber laser, which can't vary frequency the way a MOPA source can — and that frequency variation is what produces controlled color effects on metal like stainless steel and titanium.

Which machine has the bigger work area?

The Solis Duo, not the F2 Ultra — despite the F2 Ultra's higher price and more advanced camera system. The Solis Duo's native bed is 250mm × 250mm versus the F2 Ultra's 220mm × 220mm, and its conveyor-expanded length is also longer.

Is the F2 Ultra worth the extra cost if I don't need color engraving?

Probably not just for the color capability, since you wouldn't be using it. It may still be worth it for the faster max speed and dual-camera placement accuracy, but if neither of those is a priority, the Solis Duo covers the same dual-source fiber/diode niche at a comparable or lower price with a larger work area.

What does MOPA actually mean for the buyer?

MOPA (Master Oscillator Power Amplifier) fiber lasers can independently control pulse frequency and duration, which enables effects like color marking on metal that standard fixed-frequency fiber lasers can't reliably produce, regardless of wattage.

Can the Solis Duo cut material, or only mark and engrave?

OMTech doesn't publish cutting-depth specs for the Solis Duo the way it does for the F2 Ultra — the Solis Duo is positioned specifically as a marking and engraving platform rather than a cutting machine. If cutting through material (not just marking or engraving its surface) is part of your workflow, confirm current capability directly before assuming it matches the F2 Ultra's rated cutting depths.

Does the Solis Duo come with more than one lens?

The 50W/40W configuration ships with two field lenses included: a 9.8" × 9.8" lens for production batch work and a 5.9" × 5.9" lens for fine detail work like jewelry text or small QR codes. Confirm which configurations include both lenses before assuming it applies across the whole Solis Duo lineup.

For the complete picture of OMTech's fiber and dual-source lineup, see our OMTech Laser Lineup Explained guide, or shop the full Fiber Laser Engravers collection.

Have questions about which dual-laser configuration fits your shop? Contact The Maker's Chest — we'll help you match the machine to the job.

Written By

Alina Oprea

Maker & Equipment Specialist

Alina Oprea is a hands-on maker, jeweler, and workshop specialist at The Maker’s Chest, with 25 years of silversmithing experience alongside a background in woodworking, renovations, construction, and commercial ductwork installation.

Her experience spans decorative woodwork, hand-carved doors, jewelry fabrication, homebuilding with Habitat, and real jobsite problem-solving — giving her a practical understanding of materials, tools, workflow, and what machines need to deliver beyond the spec sheet.